Stacey bought a shirt for $20. amy got the same shirt a week later during a sale. amy got hers for $11. what was the percent of discount? show your work.

        45%

Step-by-step explanation:

To find the percent discount , we take the old price and subtract the new price and divide by the old price

discount = (old - new)/ old * 100 percent

               = (20-11)/20 * 100 percent

                = 9/20 * 100 percent

                     .45 * 100 percent

                45%

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation:

eight hundred an fifty one point four hundred and fifteen

800+50+1+.4+.01+.005